Multipurpose functional nonwoven fiber, and method for manufacturing same

Abstract

The present invention relates to a multipurpose functional nonwoven fabric, and to a multipurpose functional nonwoven fabric which is manufactured by performing a pretreatment process on carbonized fiber cotton, and stacking the pretreated carbonized fiber on natural cotton, mixing the pretreated carbonized fiber cotton with the natural cotton and scutching the mixed cotton, or introducing the natural cotton and stacking the natural cotton on an intermediate layer of the pretreated carbonized fiber, and a method for manufacturing same. Web formation and stacking at a cutting machine can be easily performed by performing the pretreatment process on the carbonized fiber. Excellent heat resistance and conductivity is obtained by stacking the carbonized fiber cotton on natural cotton, mixing the carbonized fiber cotton with the natural cotton, scutching the mixed carbonized fiber cotton and the natural cotton and stacking the scutched cotton, or introducing natural cotton into an intermediate layer of the carbonized fiber cotton, stacking the natural cotton on the intermediate layer of the carbonized fiber cotton, and subjecting the stacked cotton to needle punching. Since a surface temperature of the nonwoven fabric can be lowered and the loss of heat can be reduced through dissipation and dispersion of heat, thermal retention and insulation properties of the entangled natural cotton can be enhanced, and carbonization prevention and incombustiblization of the natural cotton can be achieved. Also, the multipurpose functional nonwoven fabric can be manufactured at a low production cost and exhibit environmentally friendly characteristics, and a waste material can be recycled.

1 . A multipurpose functional nonwoven fabric manufactured using the method comprising:
 (1) preparing carbonized fiber cotton by unraveling a carbonized fiber and mixing the carbonized fiber and raw cotton at a mixing ratio of 7:3 to 8:2;   (2) injecting the carbonized fiber cotton into a cutting machine to form a web;   (3) preparing needle-punched cotton;   (4) subjecting the needle-punched cotton to flame-retardant and fire-retardant treatment, dehydration; and   (5) drying,   wherein the needed-punched cotton is prepared,
 (i) by stacking the web-formed carbonized fiber cotton and natural cotton so that the web-formed carbonized fiber cotton is positioned on the natural cotton and needle-punching the stacked cotton; 
 (ii) by introducing natural cotton into an intermediate layer of the web-formed carbonized fiber cotton, stacking the natural cotton on the intermediate layer of the web-formed carbonized fiber cotton, and needle-punching the stacked cotton; or 
 (iii) by injecting the mixed/scutched cotton into a cutting machine to form a web, stacking the web-formed cotton, and needle-punching the stacked cotton. 
   
     
     
         2 . The multipurpose functional nonwoven fabric of  claim 1 , wherein the needle punching conditions comprise revolutions per minute (rpm) of 200 to 800 rpm, a speed of 2.0 to 5.0 m/min, No. of needles of 4,000 to 4,500 EA/m, and a beat density of 40 to 72 counts/cm 2 . 
     
     
         3 . The multipurpose functional nonwoven fabric of  claim 1 , wherein the needle punching is reciprocatively performed once from top to bottom and once from bottom to top. 
     
     
         4 . A multipurpose functional nonwoven fabric composition comprising the multipurpose functional nonwoven fabric of  claim 1 . 
     
     
         5 . The multipurpose functional nonwoven fabric composition of  claim 4 , for a thermal retention material, a flame-retardant material, a thermal insulation material, a heating material, a sound-proof material, an intermediate material for absorption of impact, a buffering material, a bullet-proof material, a knife-proof material, or a fire-fighting material. 
     
     
         6 . The multipurpose functional nonwoven fabric composition of  claim 4 , for a pipe, a valve, an elbow, a turbine, a rotational machine, a waste gas valve, a wall of a boiler, or a large engine. 
     
     
         7 . The multipurpose functional nonwoven fabric composition of  claim 4 , for a cryogenic thermal retention/insulation material in at least one selected from the group consisting of a transportation/storage system for LNG and LPG gases transported and stored in a liquefied state, a vessel, a vehicle, a storage tank, a pipe, a valve, a refrigeration warehouse, or a refrigerator. 
     
     
         8 . The multipurpose functional nonwoven fabric composition of  claim 4 , for a flame-retardant material or a thermal insulation material in at least one selected from the group consisting of a flame-resistant curtain, a screen roll, a flame/fire prevention blanket, a fire-fighting blanket, or fire protection facilities. 
     
     
         9 . The multipurpose functional nonwoven fabric composition of  claim 4 , for a bullet-proof material, a knife-proof material, or a fire-fighting material in at least one selected from the group consisting of a police uniform, a military uniform, a bulletproof jacket, a fire-fighting garment, fire-fighting gloves, fire-fighting boots, special working clothes, or industrial steel-capped boots used in a high temperature. 
     
     
         10 . The multipurpose functional nonwoven fabric composition of  claim 4 , for an intermediate material for absorption of impact or a buffering material in at least one selected from the group consisting of a bumper for automobiles, human body guards, a safety helmet, or a helmet. 
     
     
         11 . The multipurpose functional nonwoven fabric composition of  claim 4 , for an intermediate material or a core material selected from the group consisting of a sandwich panel, a metal panel, an aluminum composite panel, or a refrigeration panel.